I am sorry your boy has this trouble.
How long is his ear bleeding on and off?
A few months on and off. it's a tiny cut that usually heals quickly, but it's worse right now, and because of the position at the tip of the ear it's difficult to put pressure on it directly. Is there some kind of over the counter spray or ointment that will stop bleeding quickly?
I am sorry your sons boy has this trouble.
The best thing to stop bleeding in seconds is cornstarch.
You can also spray on liquid bandage every few days.
Use plain neospron to keep him from getting an infection.
Please let me know how he is doing.
Best wishes for him,